<style>
    .btn {
      border-radius: 5px;
      background-color: #4f73e8;
      border: #4f73e8;
      opacity: 1;
      transition: 0.3s;
    }
  
    .btn:hover {
      background-color: #2144b6;
      border: #2144b6;
    }
  </style>
  
  
  <a href="http://revolut.me/pedroduartefaria">
      <button class="btn btn-primary" type="button">
      Revolut QR Code 💵
      </button>
  </a>
